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the late 1990s, the United States, a professor at Harvard University, Washington, Chairman of the Green Chemistry Research, chemists PaulT.Anastas proposed the development of more environmentally friendly green chemistry of the 12 basic principles.
green chemistry of the 12 basic principles:
1, limit pollution at its source (rather than to reduce waste generation)
2, optimizing product synthesis of all the compounds constitute
3, research and development of less dangerous chemical synthesis Law
4, research and development of safer chemical products (good effects, toxicity)
5, reduce the use of chemical solvents
6, reduce energy consumption
7, the use of renewable raw materials to replace non-renewable fossil material
8, can reduce the waste of chemical The use of composites.
9, the use of chemical catalysts. As the catalyst can be used to save energy, reduce the chemical reaction time and reducing the production of waste
10, research and development of biodegradable alternatives to chemical
11, the use of real-time analysis in order to prevent pollution
12, the promotion of chemical safety to reduce accidents
In line with these principles, A biodegradable and biocompatible with the elements than traditional methods will be adopted by the performance of high pollution and low access to chemical processes. Chemists are now the challenge is to discover new chemical synthesis methods and to change their initial approach: that is, using less reactant to reduce the amount of waste, look for alternative ways to react to avoid the use of toxic reagents and solvents to reduce chemical use , To shorten the reaction time, effectively raising the output of chemical compounds. L’
the researchers decided to use xylose, from a beech tree to extract natural sugar, a renewable raw materials, the development of new skin care for active elements. The researchers first xylose after smashing into the ground water (a special kind of sound solvent), and then with the chemical reaction of hydrogen, and then after a few hours and stirred together with a slight catalyst and heating, it was known as a Xylan-Pro-Xylane of chemical elements. Pro-Xylane chemical synthesis process, there are only two steps, so it is a very clean elements.
2000, Paris, France Paris-Sud, a professor at the University of AndreLubineau announced a highly innovative program of chemical reaction, Pro-Xylane synthesis method is a victim of its inspiration derived. The new chemical reaction is extracted from the traditional C-allocated carbohydrate chemical composition (Pro-Xylane-owned chemical group) needed to simplify the four-step from. In addition, the reaction used in the chemical solvent is water, not normally used by the other organic solvents.
synthetic Pro-Xylane the same process of industrialization has been optimized to make this process as far as possible, environmental protection: that is, in large-scale production of conscious control of waste production. Synthesis of the amount of waste produced and ultimately the production of chemical molecules known as the ratio of environmental protection factor (EFactor): The lower the ratio, such that the production of chemical elements, the lower the degree of pollution. Pro-Xylane dissolved in the course of the environmental index is 13. This is standard in the range of 5-50 can be said to be a very good environmental factor.
when Pro-Xylane effective Lvxing confirmed that its environmental effect through the dual internal and external eco-toxicity test to confirm. Toxicity testing is testing whether the chemical species and ecosystems caused by harmful effects.
In fact, the main toxicity tests involving natural food chain in the three organisms. The first category is a single-celled algae organisms, mainly used for detecting whether the growth of Pro-Xylane. The second is a micro-crustaceans, that is, the Cyclops, used to study the presence of Pro-Xylane their movement and reproduction. The third category is the medaka fish eggs, the main Pro-Xylane to analyze whether the germ of its growth with toxic elements. Pro-Xylane is not a fat-soluble material, so no need to worry that it will produce bio-accumulate through the food chain. Toxicity tests carried out in parallel with the analysis of a number of other projects are proof of Pro-Xylane are not toxic to humans. When
after the adoption of toxicity testing, Pro-Xylane was chemically synthesized, and then with the other ingredients and the preparation of a final product. In the final preparation process, Pro-Xylane quality of the green once again become a process of synthesis of a valuable asset. On the one hand, Pro-Xylane very easy to maintain, once the process of dissolution, it can not use preservatives to carry out long-term preservation. On the other hand, Pro-Xylane through the water to the dissolution, final preparation process does not need heating, do not need to provide additional energy, which makes it with other ingredients in the preparation of the final work becomes quite easy. SOHU recommended>>> L’repair deep
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in L’Oreal (L’Oreal blog, news L’Oreal, L’Oreal say), in order to a preferred Can effectively control the amount of waste produced chemical reaction process from the design stage, a number of indicators of environmental protection has been the introduction of laboratory work. L’Oreal also focus on the development of bio-materials plant (vegetalbiomass) regeneration, and at the same time work closely with suppliers of raw materials, the use of environmentally friendly means of selecting the material produced.